Spool.



E. J. HUBBARD.

SPOOL.

APPLICATION FILED APR. 11. ms.

' 1 ,,%93A%& Patented Feb. 4, 1919.

' IN V EN TOR.

m fiTTORNEYS.

EBER J'. HUBBARD, OF BERWYN, ILLINOIS.

SPOOL.

Specification of Letters Patent.

Application filed April 17, 1918. Serial No. 229,002.

To all tii hom it may concern.-

of Illinois, have invented certain nevi and useful Improvements inSpools, of which the following is a specification.

My invention relates to spools, particularly to sheet etal spools usefulin cotton and Woolen mills for holding yarn.

The object of the invention is to produce a sheet metal spool which islight, strong and rigid, and whose ends are so constructed and arrangedthat the spool can operate efficiently during unwinding of the yarntherefrom, and the spool can be readily inserted in a lathe or otherwinding machine to be refilled with yarn.

The various features of my invention are fully disclosed on theaccompanying drawing in which' Figure l is a side elevational view withV one end in vertical diametral section,

' on plane 3-3, Fig. 2.

The core 5 of the spool is cylindrical and is formed by' rolling up. arectangular piece of sheet metal whose edges have respectively thedove-tail extensions 6 and the correspondingly shaped notches 7, thetongues fitting into the notches to hold the core edges intimately andsecurely together. At the ends of the core are the tongues 8 whichextend through the slots 9 formed in the-spool heads 10 and 11. Afterinsertion ofirthese tongues through these slots they a e/turned overoutwardly and against the 0 'er faces of the heads 10 and 11 and arepreferably spotwelded to the heads. The heads are further connectedtogether by the axially extending tube 12- whose ends 13 extend throughthe openings 14 in the heads and are 7 cap has a central opening 19 inline with the tube 12, and between the central .opening and the outeredge of the cap one or more slots 20 are provided -To fill in the spacebetween the head flanges 15 and the respective cap frame I preferablyutilize a filler 21 of mill board, paper, wood, or some composition,this filler being applied before the flanges 15 are formed, the fillerbeing then intimately held in place by the flanges. The filler maybe'treated by soaking in moisture protective material, such as shellac.

A spool constructed as above is light yet very strong and rigid, theformed up ends having the strength of solid heads. When a full spool isto be used it is slipped over a' spindle extending from a support, thespindle being received through the opening 19 of one cap, and the tube12 guiding the spindle end accurately through the opening 19 of theopposite cap. If the spool supporting base is wider than the diameterof.

the spool ends then it will be engaged by the outer end of the metalflange 15. Ordinarily, however, friction contact is desired in orderthat the unwinding of the yarn will Patented Feb. 41, 1919.

be more or less braked or retarded. The

supporting base for the spool is then of less diameter than the spoolends so that the filler 21 only will engage with the base, and

where a wood, paper, or composition filler .engages with a metalsupporting base, the

friction will efliciently retard the spool dur ing the unwindingoperation. It will be noted that the outer faces of the caps areslightly within the outer faces of the fillers so as not tointerferewith the frictional engagement of the fillers with the supportingbases.

The central openings 19 of the caps serve to receive the centeringpoints of the lathe or other winding machine and the slots 20 receivethe projections or pins on the lathe for turning the spool aftercentering thereof.

1 do notdesire to be limited to the exact construction and arrangementshown and described as changes and modifications are no doubt possiblewhich would still come within the scope of the invention.

I claim as follows:

1. In a spool, the combination of a cylindrical core, sheet metal endssecured to said core and having their peripheral edges" deflectedoutwardly and inwardly to form rounded flanges, sheet metal caps securedto the outer faces of said ends and having censtrengthening flanges,sheet metal caps se-' .cured against the outer faces of said ends .10

tral openings for receiving spindles for receiving lathe centeringpoints, and filler ma- 7 terial between said-caps and end flanges.

2. In a spool, the combination of a cylindrical core, sheet metal endssecured to the core and having their peripheral sections deflectedoutwardly and inwardly to form caps being inwardly a distance from theouter faces ofsaid filler material.

3. In a spool, the combination of a sheet metal cylindrical core, sheetmetal ends having slots therethrough, tongues at the ends of said coreextendin through said slots and deflected outwar ly and spot weldedagainst the outer faces of said ends, a tube extending axially throughsaid core, said ends having central openings for receiving said' endsbeing deflected outwardly and inwardly to form peripheral flanges, andfiller material between said flanges and cap frames.

4. In a spool, the combination of a cylindrical sheet metal core, sheetmetal ends secured to said core and having their peripheral edgesdeflected outwardly and inwardly to form flanges, filler material heldagainst said-ends by said flanges and having openings therethrough inaxial alinement with said core, and sheet metal frames in said openings,said frameshavi-ng' passageways therethrough in alinement with the. coreaxis for receiving lathe centering points.

In witness whereof I hereunto subscribe my name this 12th da of April,A. D. 1918.

' EB R J. HUBBARD.

